Unit 3872: Network System Administration

1. Overview of Network System Administration

• Role of a Network System Administrator
• Key Responsibilities and Daily Tasks
• Importance of Efficient Network Management in Organizations
• Career Pathways and Industry Relevance

2. Networking Fundamentals

2.1 Basic Concepts of Computer Networks

• Definition and Purpose
• Components of a Network

2.2 Network Types

• LAN (Local Area Network)
• WAN (Wide Area Network)
• MAN (Metropolitan Area Network)
• PAN (Personal Area Network)

2.3 Network Topologies

• Bus
• Star
• Ring
• Mesh
• Hybrid

2.4 Network Protocols

• TCP/IP Suite Overview
• Common Protocols: HTTP, FTP, SMTP, DHCP, DNS

2.5 OSI Model

• Overview of the 7 Layers
• Functions and Examples of Each Layer

3. Network Security Principles

3.1 Common Network Threats

• Malware, Phishing, Man-in-the-Middle Attacks
• Denial of Service (DoS) Attacks

3.2 Security Measures

• Firewalls
• Intrusion Detection and Prevention Systems (IDS/IPS)
• Antivirus and Anti-malware Tools

3.3 Encryption Fundamentals

• Symmetric vs Asymmetric Encryption
• Common Encryption Protocols (SSL/TLS, IPsec)

3.4 Best Practices for Network Security

• Strong Password Policies
• Regular Updates and Patch Management
• Network Segmentation

4. Network Configuration and Management

4.1 Configuring Network Devices

• Routers: Basic Setup and Routing Protocols
• Switches: VLANs and Port Configuration
• Firewalls: Rules and Policies
• Wireless Access Points: SSID and Security Settings

4.2 Network Management Tools

• SNMP
• Configuration Management Software

4.3 Ensuring Optimal Performance and Security

• Firmware Updates
• Backup Configurations
• Access Control Lists (ACLs)

5. IP Addressing and Subnetting

5.1 IP Addressing Concepts

• IPv4 and IPv6 Overview
• Public vs Private IP Addresses

5.2 Subnetting

• Purpose and Benefits
• Calculating Subnets and Hosts

5.3 CIDR Notation

• Understanding CIDR
• Applying CIDR to IP Addressing

5.4 Designing IP Addressing Schemes

• Network Planning
• Address Allocation Strategies

6. Network Troubleshooting and Diagnostics

6.1 Common Network Issues

• Connectivity Problems
• Performance Bottlenecks

6.2 Troubleshooting Tools

• Ping, Traceroute
• IPConfig/Ifconfig
• Network Analyzers (Wireshark)

6.3 Systematic Troubleshooting Techniques

• Identifying the Problem
• Isolating the Cause
• Implementing Solutions

7. Network Monitoring and Performance Optimization

7.1 Importance of Monitoring

• Proactive Issue Detection
• Capacity Planning

7.2 Network Monitoring Tools

• SNMP Monitoring
• NetFlow
• Performance Dashboards

7.3 Performance Metrics

• Bandwidth Usage
• Latency
• Packet Loss

7.4 Optimization Strategies

• Load Balancing
• Quality of Service (QoS)
• Hardware Upgrades

8. User and Group Management

8.1 User Account Management

• Creating and Managing Accounts
• Password Policies

8.2 Group Policies

• Defining and Applying Group Policies
• Access Control

8.3 Authentication Methods

• Password-Based
• Multi-Factor Authentication (MFA)
• Single Sign-On (SSO)

9. Backup and Disaster Recovery Planning

9.1 Importance of Data Backup

• Types of Backups: Full, Incremental, Differential

9.2 Disaster Recovery Planning

• Identifying Critical Systems
• Recovery Time Objective (RTO) and Recovery Point Objective (RPO)

9.3 Backup Strategies and Tools

• Onsite and Offsite Backup
• Cloud Backup Solutions

10. Introduction to Cloud Computing and Virtualization

10.1 Cloud Computing Concepts

• Definitions and Service Models (IaaS, PaaS, SaaS)
• Deployment Models (Public, Private, Hybrid)

10.2 Virtualization Technologies

• Virtual Machines
• Containers

10.3 Impact on Network Administration

• Network Virtualization
• Cloud-Based Network Management

10.4 Benefits of Cloud-Based Services

• Scalability
• Cost Efficiency
• Disaster Recovery